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Re: typeset -p on an empty integer variable is an error. (plus -v test w


From: Chet Ramey
Subject: Re: typeset -p on an empty integer variable is an error. (plus -v test w/ array elements)
Date: Sat, 12 Jan 2013 18:04:00 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/17.0 Thunderbird/17.0

On 1/12/13 10:07 AM, John Kearney wrote:

> regarding -e it mainly has a bad name because there is no good guide how
> to program with it.
> so for example this causes stress
> [ ! -d ${dirname} ] && mkdir ${dirname}
> because if the dir exists it will exit the scripts :)

I'm not sure this is what you wanted to say.  When -e is set, that code
will not cause an error exit if ${dirname} exists and is a directory.  Run
this script in the bash source directory and see what happens:

set -e
[ ! -d builtins ] && mkdir builtins
echo after


Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



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